// 横向 居中
.flex-r-c-c {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}
.flex-r-b-c {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}
.flex {
  display: flex;
  flex-wrap: wrap;
}
